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AWS AmazonECS medium security documentation change

Service: AmazonECS · 2025-07-18 · Security-related medium

File: AmazonECS/latest/developerguide/ecs-optimized_AMI.md

Summary

Added end-of-life warning for Amazon Linux 2 AMI, urging migration to Amazon Linux 2023

Security assessment

Explicitly warns about security risks from using an EOL AMI (no future security patches). Directly addresses security maintenance by encouraging upgrade to a supported OS version.

Diff

diff --git a/AmazonECS/latest/developerguide/ecs-optimized_AMI.md b/AmazonECS/latest/developerguide/ecs-optimized_AMI.md
index 3b25a4948..7e34611dd 100644
--- a//AmazonECS/latest/developerguide/ecs-optimized_AMI.md
+++ b//AmazonECS/latest/developerguide/ecs-optimized_AMI.md
@@ -8,0 +9,4 @@ Applying security updates
+###### Important
+
+The Amazon ECS-Optimized Amazon Linux 2 AMI reaches end-of-life on June 30, 2026, mirroring the same EOL date of the upstream Amazon Linux 2 operating system (for more information, see the [Amazon Linux 2 FAQs](https://aws.amazon.com/amazon-linux-2/faqs/)). We encourage customers to upgrade their applications to use Amazon Linux 2023, which includes long term support through 2028.
+